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Re: [Qemu-devel] [ PATCH v7 00/22] replay additions
From: |
Pavel Dovgalyuk |
Subject: |
Re: [Qemu-devel] [ PATCH v7 00/22] replay additions |
Date: |
Mon, 12 Mar 2018 13:32:21 +0300 |
Ping.
Pavel Dovgalyuk
> -----Original Message-----
> From: Pavel Dovgalyuk [mailto:address@hidden
> Sent: Tuesday, February 27, 2018 12:52 PM
> To: address@hidden
> Cc: address@hidden; address@hidden; address@hidden; address@hidden;
> address@hidden; address@hidden; address@hidden; address@hidden;
> address@hidden; address@hidden; address@hidden; address@hidden;
> address@hidden; address@hidden; address@hidden;
> address@hidden
> Subject: [ PATCH v7 00/22] replay additions
>
> This set of patches moves replay lock upper in the function call tree.
> Now replay lock functions similar to BQL in older version and allows
> deterministic execution of the threads in icount mode.
> It is also fixes some vmstate creation (and loading) issues
> in record/replay modes:
> - VM start/stop fixes in replay mode
> - overlay creation for blkreplay filter
> - fixes for vmstate save/load in record/replay mode
> - fixes for host clock vmstate
>
> There is also a set of helper scripts written by Alex Bennée
> for debugging the record/replay code.
>
> v6 patches with updates for v7 are available in the repository:
> https://github.com/ispras/qemu/tree/rr-180207
>
> v7 changes:
> - updated record/replay documentation
> - removed abort() from mutex stub functions
> - fixed cpu_io_recompile function
>
> v6 changes:
> - removed BQL optimization at all
> - refined replay lock patches
> - removed lock/unlock from replay-audio
>
> v5 changes:
> - removed patch for narrowing BQL-protected code
> - disabled bdrv_(drain/flush)_all for record/replay mode
>
> v4 changes:
> - removed upstreamed patches
> - added patch for saving async queue state in replay
> - minor fixes
>
> v3 changes:
> - removed upstreamed patches
> - fixed bug with recursive checkpoints
> - fixed bug with icount warp checkpoint
>
> v2 changes:
> - updated lock/unlock logic (as suggested by Paolo Bonzini)
> - updated cpu execution loop to avoid races in setting/resetting exit
> request (as suggested
> by Paolo Bonzini)
> - minor changes
>
> ---
>
> Alex Bennée (5):
> replay/replay.c: bump REPLAY_VERSION again
> replay/replay-internal.c: track holding of replay_lock
> replay: make locking visible outside replay code
> replay: push replay_mutex_lock up the call tree
> scripts/replay-dump.py: replay log dumper
>
> Pavel Dovgalyuk (17):
> cpu-exec: fix exception_index handling
> block: implement bdrv_snapshot_goto for blkreplay
> blkreplay: create temporary overlay for underlaying devices
> replay: disable default snapshot for record/replay
> replay: fix processing async events
> replay: fixed replay_enable_events
> replay: fix save/load vm for non-empty queue
> replay: added replay log format description
> replay: save prior value of the host clock
> replay: don't destroy mutex at exit
> replay: check return values of fwrite
> replay: avoid recursive call of checkpoints
> replay: don't process async events when warping the clock
> replay: save vmstate of the asynchronous events
> replay: don't drain/flush bdrv queue while RR is working
> replay: update documentation
> tcg: fix cpu_io_recompile
>
>
> accel/tcg/cpu-exec.c | 5 +
> accel/tcg/translate-all.c | 18 ++-
> block/blkreplay.c | 75 +++++++++++
> block/io.c | 22 +++
> cpus.c | 26 +++-
> docs/replay.txt | 163 +++++++++++++++++++++---
> include/qemu/timer.h | 14 ++
> include/sysemu/replay.h | 18 +++
> migration/savevm.c | 13 ++
> replay/replay-audio.c | 14 +-
> replay/replay-char.c | 21 +--
> replay/replay-events.c | 75 +++++------
> replay/replay-internal.c | 47 ++++++-
> replay/replay-internal.h | 16 ++
> replay/replay-snapshot.c | 12 ++
> replay/replay-time.c | 10 +
> replay/replay.c | 62 ++++++---
> scripts/replay-dump.py | 308
> +++++++++++++++++++++++++++++++++++++++++++++
> stubs/replay.c | 9 +
> util/main-loop.c | 15 ++
> util/qemu-timer.c | 12 ++
> vl.c | 12 +-
> 22 files changed, 831 insertions(+), 136 deletions(-)
> create mode 100755 scripts/replay-dump.py
>
> --
> Pavel Dovgalyuk
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